body{
    background-color:midnightblue

}
*{
    margin: 0;
    padding: 0;
}

form {
    width: 800px;
    height: 460px;
    background-color: rgba(255,245,245,0.3);
    border-radius: 10px;
    border: 1px solid rgba(255,0,0,0.4);
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    margin: auto;
    padding: 40px;
    box-sizing: border-box;
}

form .content {
    border-radius: 20px;
    background-color: rgba(255,245,245,0.5);
    margin-top: 20px;
}

form .content .top h3{
    line-height: 60px;
    text-align: center;
    border-bottom: 1px solid rgba(0,0,0,0.4);
}

form .content .center .line {
    line-height: 60px;

}


form .content .center {
    border-bottom: 1px solid rgba(0,0,0,0.4);
    text-align: center;

}

form .content .center label {
    display: inline-block;
    width: 100px;

    text-align: right;

}

form .content .center .line:not(.not) label{
    letter-spacing: 16px;
}

form .content .center .not label{
    padding-right: 16px;
    box-sizing: border-box;
}

form .content .center input {
    width: 250px;
    margin: 0 40px;
    line-height: 40px;
    border-radius: 6px;
    outline: none;
    border: 1px solid rgba(0,0,0,0.4);
}

form .content .center input:focus{
    border: 1px solid lawngreen;
}

form .content .center input:visited{
    border: 1px solid green;
}

form .content .center input:valid+span{
    visibility: hidden;
}

form .content .center input:invalid+span{
    visibility: visible;
}

form .content .center span{
    display: inline-block;
    width: 200px;
    text-align: left;

}

form .content .bottom {
    line-height: 80px;
    text-align: center;

}

form .content .bottom input {
    width: 500px;
    height: 50px;
    background-color: rgba(65,73,175,0.3);
    border: none;
    outline: none;
    border-radius: 10px;
}

form .content .bottom input:hover{
    background-color: #E149AF;
    box-shadow: 0 2px 0 1px rgba(225,73,175,0.5);

}

form .content .bottom input:active{
    box-shadow: 0 1px 0 1px rgba(12,135,162,1);
}
